Raker-tooth gauge



May 4, 1937. c. R.. KENNEY A RAKER TOOTH GAUGE Filed March 13, 1956 APatented May 4, 1937 UNITED STATES PATENT oFfFrlFC E L 1 Claim.

The invention relates to gauges used for ling the raker teeth of cross-cut saws to proper length, according to the kind of wood to be sawed or the extent (if any) to which it has been seasoned.

'I'he gauge is of the general type having a plate to lie vertically against a saw blade, longitudinally spaced lateral anges on the upper edge of said plate to rest on the cutting teeth of the blade, a raker-tooth gauge between said flanges, a flat slide carrying said gauge and lying against said plate, said slide being provided withy a vertical slot, a clamping screw threaded through said slot and threaded into an opening in said plate, and screw-threaded means for vertically adjusting the slide.

It is the principal object of the invention to provide a new and improved construction establishing a novel adjustable connection between the lower end of the plate and the lower 'end of the slide, including a manually actuated adjusting screw threaded through an opening in a lug projecting from the plate, said slide having a second slot through which said lug passes, said second slot having a widened end receiving the head of the adjusting screw in such manner that rotation of this screw to adjust it upwardly or downwardly, will cause its head to similarly adjust the slide.

Another object of the invention is toy provide a construction which may be easily and inexpensively stamped (with the exception of the adjusting and clamping screws) from at sheet metal.

A still further object is to provide a gauge which may be easily and inexpensively manufactured and sold at small cost, yet will be eilicient and durable.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawing.

Fig. 1 is a side elevation of the gauge in use.

Fig. 2 is a vertical sectional view on line 2--2 of Fig. 1.

Fig. 3 is a horizontal sectional View on line 3--3 of Fig. 1. I

Fig. 4 is a disassembled perspective View.

Fig. 5 is a side elevation showing a slight modlfication.

In the drawing above brieily described, I0 denotes a suitably shaped flat plate to lie against one side of a saw blade B, the upper edge of said plate being provided with two longitudinally spaced flanges II to lie upon the cutting teeth I 2 of the blade at opposite sides of its raker teeth I3. A raker-tooth gauge I4 having a tooth-receiving slot I5 occupies the space between the flanges II and is carried by a flat vertical slide `I6 which lies against the outer side of the plate I0. The upper portion of the slide IB is formed with a vertical slot I 'I through which a clamping screw I8 passes, said clamping screw being threaded into an opening I9 in the plate I0.

The lower end of plate Ill is provided with a lateral lug 20 disposed centrally below the space between the flanges Il and projecting in the opposite direction from said flanges, said lug being formed with a threaded opening 2l. The lower end portion of the slide I6 is provided with a second vertical Slot 22 through which the lug 28 passes, the lower end of this slot being widened, preferably by forming notches 23 in the parallel vertical edges oi the slot, with the lower edges of said notches flush with the lower end wall of the slot. An adjusting screw 24 is threaded Vertically through the opening 2| of the lug 20, said adjusting screw being provided with a at head 25 at its lower end. This head is received in the notches 23, causing upward or downward adjustment of the screw 24 to similarly adjust the slide I6. Thus, with the clamping screw I8 loosened, accurate adjustment of the slide I6 to locate the gauge I4 at the proper level, may be quickly and easily accomplished, the adjusted slide being then locked by tightening of said screw I8.

For vertically guiding the lower portion of the slide I6, the lug 20 and the parallel vertical edges of the slot 22 may be relied upon as shown in Fig. 5, but if desired, guiding ribs 26 may be formed on the plate Il) as seen in Figs. 1 to 4.

Preferably, an indicating mark 21 is provided on the slide I6 for coaction with a plurality of such marks 28 on the plate II), to allow accurate adjustment of the gauge, and when the ribs 26 are employed, the marks 28 may well be formed on one of these ribs.

I prefer to form the entire plate I0 with its lug 20 and with the ribs 26 (when the latter are ernployed) from a single sheet metal plate cut and stamped to the necessary configuration. Similarly, I prefer to form the slide I6 and its gauge I4 from a single metal stamping. This stamping is of harder metal than the stamping from which the plate I0 is formed, to resist the action of the file used for dressing the raker teeth I3, and a portion of it may, if desired, be tempered.

It will be seen from the foregoing that an unusually simple and inexpensive, quickly and easily adjustable, eiiicient and durable gauge has been slot having a widened end, said plate being pro-1 vided with a lateral lug which passes through said slot, said lug being formed with a threaded opening, a vertical adjusting screw threaded through said opening, said screw having a at operating head received in said widened slot end, whereby normal rotation of said screw will cause vertical movement of said slide, and a screw-andslot-connection between the upper portion of said slide and said plate.

CHARLES R. KENNEY. 

